I would be very happy. They should have released a X-Men 4 movie few years ago. I just want them to continue the original series.

Thats like saying The Avengers was Iron Man 3, Thor 2 and Captain America 2. Thats why I don't agree with DOFP being X4 and First Class 2 at the same time.

I hate to say it but...I honestly think this will be the last time we see the First Class cast. There is only so far they can take the prequel approach, much like the Star Wars films. FC played an important role in refreshing interest in this franchise, but its job is done. It created a bridge to what is happening now. But I've never believed that Fox intended on making a whole series with the FC cast; it was always about bringing it back to front and center with the classic X-Men. This Days Of Future Past will be the first foray into that.

After this film drops, I 100% expect Fox to retire everything and everyone we associate with this franchise and start over completely with a real reboot with new actors, storylines, etc. Kinda like what Marvel/Sony did with The Amazing Spider-Man after the Tobey McGuire films reached their peak. The shelf life for this particular X-Men cast is nearing its expiration date. This 2014 film is about wrapping up all the loose ends, which explains why Fox is pursuing James Marsden for a role in the project as well. I think they want to send this thing off big and proper-like for the fans and to open up the doors for something bigger to challenge the success of what Marvel Studios is enjoying right now.